FOBx530

So I got a dura-ace crankset 7700 for 25$ yes there are scratches but structurally it's fine, not warped or untrue.

That was a steal!

Now the problem is the bottom bracket and correct if I'm wrong, thats why I'm here for help.



I think it needs 68mm 109.5 octalink type bottom bracket,

but everytime I goto a bike shop, it's over 50$+ for the bottom bracket...let it be BB-5500 or BB-6500. WHY IS IT SO EXPENSIVE FOR AN OLD BOTTOM BRACKET?

I was wondering would it be a good idea to use a ES-25 bottom bracket? except they don't have 109.5, I think the shortest they have are 113, would this be a problem?





Note*******My current crank is a FSA Veloce double chainring but I'm running ONLY the larger outter chainring and removed the small inside chainring while running a 9 speed in the back.
MY CHAIN DOES NOT COME OFF when shifting into any of these speeds.